下列程序中，result和result2输出分别是 ( )
long a = 123;
int b = 1;
long result = a & b;
cout<<result<<endl;
long a2 = -123;
unsigned int b2 = -1;
long result2 = a2 & b2;
cout<<result2<<endl;
123 -1
123 -123
1 -1
1 -123